I'm presently doing a conversion of a Pedersoli Kentucky rifle from percussion to flint. The R.E. Davis late Ketland flintlock that Track of the Wolf sells ( part #Lock LK-F) is not a direct drop in replacement, but can be made to fit. I don't know if the Pedersoli Jager uses the same lock, but the folks at Track will know. They usually answer customer questions within 24 hours. Also, VTI Gun Parts might have the lock you need.